Twin claw battery clamp



1Feb; zo, 1945.

J. VIZNIOWSK! TWIN CLAW BATTERY CLAMP Filed Jan. 22, 1943 y JOHN wzfviowffl.

ma. TC;

Patented Feb. 2o, 194s UNITED STATES PATE1\1'Il OFFICE.

TWIN CLAW BATTERY CLABIP John Vizniowski, lorthgate, Saskatchewan,

Application, January 22, 1943, Serial No. 473,207

In Canada January 26, 1942 1 Claim. ('Cl. 173-273) My invention relates to improvements in battery clamps, an object of the invention being to provide an inexpensive, simplified clamp wherein, when the endmost pair of gripping claws become corroded, and during the process of corrosion thereto, will continue to bind or grip a battery post by means of a secondary inner pair of claws as hereinafter to be described.

With the above more important object in view and such other minor objects as may appear as the specication proceeds, my invention consists essentially in the arrangement and construction of parts all as hereinafter more particularly described, reference being had to the accompanying drawing, in which: v

Figure 1 is a side elevation of my battery clamp. Figure 2 is an underside view of Figure 1. Figure 3 is a perspective illustration of my device in situ uponr a battery post.

lIn the drawing like characters of reference in?"v dicate corresponding parts in the diierent figures.

My invention comprises a pairv of arms' I hingedly and pivotally connected by means of a hinge 2, the arms being of the conguration clearly illustrated. One of the arms extends upwardly in the form of a-conventional connection :ifor the terminal of a wire and will therefore not be described in detail. s

Extending between the arms I and spanning the same, is a compression coil spring 4, the arms I angling inwardly at the points 5 to provide inwardly directed, open centered portions E.

is to be understood that they will move inwardly or bite into the post.

The edges I5 of the two openings I3 will then grip the post further up and thus the clamp will remain useful fora considerably longer period than the conventional clamp. If desired, ther edges I5 may be so located with respect to the gripping edges of the portions Il, that, for a given taper on a battery post, all four gripping that. all matter contained in the accompanying 5' specication shallV be interpreted as illustrative The portions 6 angle downwardly at the points 'I thus providing thev downwardly Adirected extensions 8 and 9, these extensions 8 and 9 angling inwardly again at the points Ill' to /provide inwardly directed post gripping portions I I.

It will be seen that one of the inwardly directed extensions 6 extends through a pair of spaced apertures I2 near the top of the downwardly diwardly directed portions 6 overlap the same and only and not in a limiting sense and I desire only such limitations placed thereon as are specically s expressed in the accompanying claim.

What I claim as my invention is:

A battery clamp comprising in combination a pair of arms mutually connected at one end, said arms kdiverging from their points of mutual connectionbutangulating into the parallel medially of their length, a compression spring spanning the parallel portion of said arms, a pair of opposed double-angulated claws attached to the free ends ,of said arms, said claws each consisting of upper claw portions having open centres ex- `tending inwardly atfright angles to the parallel rected extensions' 9 sothat the other of thein# when the post; gripping portions II- are spread apartg'it will be recognized that the open centres I3 of the portions 6 are in partial alignment sol that av battery post Il may extend therethrough.- l

The portions enumerated 6 to I3 inclusivecom prise the claws of my device and from thevioregoing description,l it vis to be understood that when -a new clamp is placed over a battery post, the outermost clawsll will ilrst grip the post. However, when the same commence to corrode, it

portions of said arms in lapping relationship, downwardly directed parallel and spaced extensions'at the inner ends of said upper claw p0rtions, said downwardly directed portions being parallel with the parallel portions of said arms,

ythe underlapping one of said claw portions passing throughva transverse slot in one of said downwardly directed extensions adjacent the junction of the same and the overlapping claw portion, and

-a pair of parallel and inwardly directed post gripping portionsat'the ends of said extensions .at

right angles thereto and parallel with said claw portions. t JOHN VIZNIOWSKI. 

